HG one program i find noteworthy is the Advanced Uninstaller. something i could really use. usually when u un-install something it leaves behind a foot-print that's difficult to get rid off..safely. so this prog. could come in handy for many of us.
Well yes, I have found many programs to leave some junk files/registry entries after they are uninstalled. If you are not carefull about this, a large portion of your hard drive gets wasted. Advanced Unintsaller helps me with this, it scans for left out files/registry entries and deletes them - According to your preference of course (Since some files/registry entries are shared).